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Celebrity Halloween Costumes This Year Run The Gamut From Spooky To Sexy To Stupid

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Nicole Richie

Snooki and J-Woww

Hilary Duff

John Stamos

David Spade

Alessandra Ambrosio

Francesca Eastwood

Kelly Brook

Michelle Trachtenberg

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Bella Thorne

Hugh Hefner

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Nina Dobrev

Chris Colfer

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Fergie

David Spade

Alessandra Ambrosio

Vanessa Hudgens

Sacha Baron Cohen

Molly Sims

Elisabetta Canalis

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Chmerkovskiy

Tim Allen

Brody Jenner

Jessica Lowndes

Lauren Conrad

Jesse Tyler Ferguson

Kristin Chenoweth

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Lisa Stelly & Jack Osbourne Halloween

Mark Ballas & Derek Hough Halloween

rob shuter halloween

delaina dixon halloween

jason dundashalloween

jim shearer halloween

miley cyrus halloween

chloe menas halloween

Patrick Stewart halloweeen

al roker halloween

savannah guthrie natalie morales halloween

matt lauer halloween

ellen degeneres halloween

serge ibaka halloween

lady gaga halloween

bethenny frankel halloween

kelly ripa halloween

Chelsea Handler

Joanna Krupa

Paris Hilton

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Rihanna

Kate Moss

Nicole Scherzinger

Kyle Richards

Sandra Bullock

Alyson Hannigan

Hugh Laurie

Hugh Jackman

Heidi Klum

Coco

Liv Tyler

Bethenny Frankel

Kelly Osbourne

Adam Lambert

Carmen Electra

Halloween falls on a Thursday this year, which has put us all in an unfamiliar predicament: When, exactly, are we supposed to dress up for Halloween parties? Well, some of our favorite celebrities decided that they just couldn't wait for October 31st to roll around, which meant that Halloween season officially kicked off in Hollywood over the weekend. Some celebs decided to play it sexy (hello Lea Michele!), some went for scary (Hugh Hefner twerking? YIPES!), and some unfortunately didn't put very much thought into their costume at all (we're looking at you, Julianne "Blackface" Hough!). So whether you attended parties this weekend, too, or are simply looking for inspirado for Thursday night, check out our gallery above of who wore what this Halloween!

[Photos: Splash News, Pacific Coast News, Instagram]